Window-frame.



S, L. MARKHAM.

WINDDW FRAME.

APPLICATION FILED JULY 28, 1911.

Patented July 22, 1913.

2 SHEETS-SHEET 1.

UNITED STATES PATENT OFFICE.

SIDNEY L. MARKHAM, OF SILVER CREEK, NEW YORK.

WINDOW-FRAME.

T) all whom it may concern Be it known that I, SIDNEY L. llfannn;xar, a citizen of the United States, residing at Silver Creek, in the county of Chautauqua and State of New York, have invented new and useful Improvements in lVindow- Frames, of which the following, taken in connection with the accompanying drawings, is a full, clear, and. exact description.

The invention relates to frames for window sashes, and the object of my in'iprovement is, first, to provide resilient holding strips on the sides of the frame so that both the upper and lower sashes may be quickly and easily removed; second, to provide continuous wire springs around each end of the window frame so as to resiliently support the holding strips for the upper and lower sashes, said springs adapting themselves to the pressure on each side; third, to provide removable sills, head pieces and side strips on the frame so that the resilient holding springs may be easily retrieved from the frame for renewal. or repair; and the invention consists in the construction and arrangement of the parts as shown in this specification and the accompanying drawings, and pointed out in the claims.

' In the drawings, Figure 1 is a lengthwise sectional View of the window frame with the sash and holding springs in position therein, the sectional view extending through slots for the springs in the sill, cap piece and holding strips. Fig. 2 is a lei'igthwisc elevation of the sash showing the cord attached thereto; and Fig. 3 is a front view of the side with a portion broken away showing the method of attaching the cord to the sash so that it may be removable. Fig. 4t is a perspective view of one of the springs, the ends of the springs being broken away. Fig. 5 is a front elevation of a portion of the window frame and sash with the corners broken away to show the springs in position, one of the holding strips for the lower sash being in the position it would assume in removing it from the sash. Fig. 6 shows an elevation of the rear side of one of the holding strips. Fig. 6 is an edgewise elevation of one of the holding strips. Fig. 7 is a lengthwise sectional view of the window frame at line X X in Fig. l, the central portion being broken away. Fig. 8 is a sectional View at line Y Y in Fig. 1.

Specification of Letters Patent.

Application filed July 28, 1911.

Patented July 22, 1913. Serial No. 641,035.

Like numerals of reference refer to corresponding parts in the several views.

The numeral 10 indicates the window frame, which is composed of an outer frame having the sill 11, side pieces 12 and top cross bar 13 and the inner sill piece 14-, side strips 15, 1G and 17 and inner top cross bar 18, also the inner face plates 19 and outer face plates 20.

The inner side strips 16 and 17 are placed a spaced distance apart to receive tli erebetween the holding strip 21 for the upper sash 22 and to separate said upper sash 22 from the inner or lower sash 23. The inner sash 23 bears against the strip 16 and has the holding strip or side stop 15 provided between face plate 19 and sash 28 and strip 16 for holding the inner side of said sash 23.

The inner sill piece 14., side steps 15 and inner cross top bar 18 are provided with lengthwise grooves 24 on their outer sides to receive therein at each end of the frame the U-shaped spring 25, as shown in Fig. 1, so as to resiliently and syncln'onously hold the side strips 15 bv the legs 31. Because of this resilient holding of the side strips 15 said side strips may be pressed toward plates 12 snfliciently to permit of the removal of the lower sash 23.

The holding strip 21 between the sashes 22 and 23 has a groove 26 along the rear side similar to groove 2% and along the strip 27 on the top cross bar and also within a strip 28 in the outer sill 11 so that springs 25 may be inserted in said grooves 26 around the upper and lower ends of the frame to resiliently hold the steps 21 at each side so that said stops may be pressed toward plate 12 of the frame and permit the removal of the upper sash 22.

The side pieces or steps 15 are made removable by providing a small opening 13 in the outer top cross bar 13 for the upper end of stop 15 so that said stop 15 may be moved upward a sutlicient distance to allow its notched lower end to escape from the sill piece 14:. The sill piece 14 is mortised to receive said notched lower end of the stop 15. The upper end of the stop 15 is mitered to fit against the end of top cross bar 18, so it easily slips upward sufliciently, when pressed back, to allow of its easy removal from the frame, as shown in Fig. 5, the leg of the upper spring 525 assisting in said removal. The sill piece 1 1 is removahly at tached to sill piece 11 by blind screws 29 in its edge'toward the sash, the heads of said screws being sunken within said edge sufficiently to permit of the sash passing down without encountering said screws. The inner top cross bar 18 is also removably attached to the outer top cross bar 13 by means of suitable screws, which arrangement permits of the removal of sill 14, inner cross top bar 18 and side pieces 15 and the consequent placing or removal of the springs The springs 25 are made U-shaped and preferably of wire and have a coil 30 turn-ed in each corner so that the legs 31 may be sprung back and forth any number of times without breaking the wire at the corner and normally inclined inwardly or toward one another and when sprung outwardly to the rectangular form, as shown in Fig. 1, the springs press firmly against the sill 14c and top bar 18 as well as against the stops 15, thereby making a self adjusting construction that holds all the parts in place. It is apparent that a U-shaped spring without the coils 30 would attain the purpose, but such springs are apt to break from the constant use which is necessary in the cleaning and repair of windows and would not give the strong pressure. It is apparent that the coils 30 do away with any such difliculty and at the same time greatly strengthen the spring of the legs 31. The springs 23 are held in the grooves 24: in the sill and top cross bar so that said springs can slide end wise and adapt themselves to the thickness of the holding strips 15 or the pressure upon said strips. This arrangement gives a. synchronous holding of the springs at the top and bottom of the window and the upper and lower ends of the holding strips 15, which permits the springs to movein the grooves as well as spring to adapt themselves to the changes in the holding strips and at the same time to firmly support the same while always holding the strips in line, since the springs in the grooves must keep the holding strips in line. The legs 31 of the springs 25 bear upon the holding strips 15 in the grooves 24 and the. cross connecting portion of the spring bears on the sill 14 or top bar 18 in the groove 24. The grooves 2%. are made sufficiently deep in the strips 1.5 to permit of the easy removal of said strips from the frame. To strengthen and prevent the warping of the strips 15 a metal plate 32 is attached to the rear side of the strip about midway of its length, which metal plate 32 bridges the grooves 24 and holds the strips 15 firmly in line.

In order that the sashes 22 and 23 may be quickly and easily removed from the frame the sash cords 33 are provided with rings 34 on their inner ends, and a hook 35 is provided within an opening 36 at the lower end of the groove 37 in the edges of the sashes 22 and 23. It is apparent that the side strips 15 may be pressed back, thereby permitting the removal of the lower sash 23 from the frame 10 and that the cords 33 at each side may be quickly detached from the sash 23 by means of the ring 3% and the hook 35, and that in a similar manner the upper sash 22 may be removed by means of resilient stops 21, ring 3% and hook 35; and also that said sashes may be quickly returned to the frame 10 by hooking the rings 3st over the hooks and pressing back the stops 15 and 21 sufficiently to admit them.

I claim as new:

1. A window frame comprising side and end frame pieces, window sashes to fit said frame, movable holding strips for said sashes in said frame, and Ushaped springs in said frame one extendingacross each end of said frame to resiliently and synchronously support both of Said movable holding strips at each side of said frame with one spring.

2. A window frame comprising side plates and a sill and top plate connecting the upper and lower ends of said side plates, spaced strips on said side plates to form grooves therebetween, holding strips for the window sash removably mounted in said grooves, springs having coils in the corners removably mounted in said top plate and sill, and each extending across an end of said frame, each of said springs having legs extending along the grooved outer sides of said holding strips to resiliently and synchronously support the same on both sides of said frame at each end.

3. A window frame comprising end frame pieces having grooves lengthwise of their rear sides, window sashes to fit said frame, movable holding strips for said sashes in said frame at each side having grooves lengthwise of their rear sides. and springs having legs extending into said grooves in said end frame pieces and holding strips from each corner of said frame and slidably movable therein to resiliently and synchronously support said holding strips in line in said frame.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SIDNEY L. MARKHAM.

Vitnesses H. U. HARRIs, MARY D. MILLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissione of Patents, Washington, D. G. 

